Refrigerator.



.A. M. KJAERSGAARD.

EEPBIGEBATOB.. APPLICATION FILED MALA, 1912.

LA xul@@@1 l Patented M3112, 1915.

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A AUGUST MARIUS KJAER-SGAARD, 0F CORINTH, DENMARK, ASSIGNOR, BY MESN EASSIGNMENTS, T0 '.LHIEv FIRM 0F HAN N EFORDS, LIMITED, 0F LONDON,ENGLAND.

REFRIGERATOR.

Specication of Letters Patent.

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Application filed March 4, 1912. Serial No. 681,483. V

To all whom t may concern Be it known that I, AUGUST MARIUS KJAERSGAARD,citizen of the Kingdom' of Denmark, and a resident of the village ofCorinth, county of Fyen, Denmark, engineer, have invented a new anduseful Improvement in Refrigerators of that Type in which the CoolingAction is Effected by Vaporizing a Volatile Liquid and then Absorbingthe Vapor.

rI`he following is a specification describing the device.

Theinvention relates to a refrigerator, especially adapted `for domesticpurposes and wherein a relatively low temperature is obtained Abythejvaporization of a fluid in `a vessel inclosed in a compartment ofthe refrigerator.

An object of the invention is to maintain for a long period a relativelylow temperature by supporting the container in a fluid which isnon-congealable and which is refrigerated by the low temperature in thecontainer.

Another object of the invention is to provide va device forcommunicating the reduced temperature of the container to the entirecompartment wherein the container holding the fluid to be evaporatedissupported.

With these and other objects in View I have illustrated an embodiment ofthe invention in the accompanying drawing.

Figure l shows a refrigerator in front elevation. Fig. 2 is a side viewof the compartment holding the container.

The refrigerator shown in the accompanying drawing as a cabinet l,contains a compartment 2, in which a container 3 is located. A pluralityof pipes 4 extend from this container 3 and return to the same for thepurposes described below. The container 3 may contain water or someother fluid vaporized by evacuation and the compartment 2 may be filledwith brine or the like. A pipe 5 extending from the container 3 throughthe top of the refrigerator is connected with a pipe which leads into anab.-

sorption vessel 7. This vessel contains a nonvolatile liquid which willabsorb the vapors formed by the evacuation of the container 3. A pump Sis indicated and serves for generating a vacuum in the container 3, apipe leading from said pump to the pipe 6.

Ihen the pump 8 is actuated air is drawn by suction from the containerthrough the pipe G, producing ,thereby a vacuum in the container 3 sothat the liquid therein vaporizes. These vapors are absorbed in thevessel 7 whereby in a well known way the temperature of the remainingliquid in the container is reduced. Cn account of the circulating pipes-l this low temperature will be communicated to the entire compartment 2and the contents thereof, whereby the other compartments of therefrigerator also are sutliciently cooled.

The absorption vessel 7 and the pump 8 preferably are of theconstruction shown in Letters Patent 93-l5l5 granted jointly to me andCarl Soeren Julius lViese.

By connecting the pipe 8 with a conduit communicating with the container3, and with the absorption vessel 7 the pressure will be reduced in bothof the vessels. Means may be provided similar to those shown in theaforesaid Letters Patent for preventing discharge of the absorption andvapo-rization fluid into the pump.

I claim:

An evaporator for refrigerating devices comprising a receptacle for thefluid to be evaporated and a plurality of pipes extending from thebottom of said receptacle to a point above said receptacle and returningto the ton thereof, said pipes communicating at both ends with thecontents of said receptacle.

Signed by me at Copenhagen, Denmark, this 30th day of January 1912.

AUGUST MARIUS KJAERSGAARD.

